Just Submitted Earth Science Files

Below are a listing of files that have been recently submitted. They are in order of newest to oldest.
There are 485 files.

Biodiversity Through Time
Date Submitted: 2011-05-05
Students graph the changes in biodiversity found in the fossil record over the last 550 million years.

It's All Greek To Me!!
Date Submitted: 2011-04-28
This lesson allows students to use modern technology to recreate Eratosthenes' method of estimating the Earth's polar circumference.

Evaporation And Condensation
Date Submitted: 2011-02-05
This is a simple, yet effective, activity to reinforce the processes of evaporational cooling and condensational warming.
It can be done as a class or given to students as a 'hands-on' activity and exercise in following directions.